On Saturday, March 6, 2021 at 7:41:15 PM UTC-5, Roger Blake wrote:
On 2021-03-05, Bob F wrote:
Killing off a several thousands more of their voters with another wave
will be fun for their re-election campaigns to deal with.
There is no scientific basis for the idiotic liberal idea that random
cloth masks can stop the spread of the China virus, or any virus.
What *can* work to rid the U.S. of a virulent contagion is to round up
leftists and transport them to predeterimined locations around the
country where they can then be exterminated. Guaranteed results.
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Roger Blake (Posts from Google Groups killfiled due to excess spam.)
The fraud of "Climate Change" -- https://RealClimateScience.com
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Of course there is. Masks stop at least part of the *droplets* carrying virus that
an infected person spews out. I emphasize droplets because a favorite tactic of
the mask deniers is to claim that the virus is too small for a mask to be effective.
When did wearing a simple mask become such a nasty, divisive, stupid political issue?
When Trump made it one and his cult eagerly went along. Instead of encouraging
mask use, the science denying fool mocked them. That assisted in making
more people sick, more hospitalized, more dead. Holding death rallies boosted it
even more. It's just a mask, good grief. But Trump saw a way to use it to get
more support from his Trumpets. Another example of why I left the GOP
and sadly see no reason yet to return.
https://www.ucsf.edu/news/2020/06/41...-masks-prevent
One category of evidence comes from laboratory studies of respiratory droplets and the ability of various masks to block them. An experiment using high-speed video found that hundreds of droplets ranging from 20 to 500 micrometers were generated when saying a simple phrase, but that nearly all these droplets were blocked when the mouth was covered by a damp washcloth. Another study of people who had influenza or the common cold found that wearing a surgical mask significantly reduced the amount of these respiratory viruses emitted in droplets and aerosols.
A recent study published in Health Affairs, for example, compared the COVID-19 growth rate before and after mask mandates in 15 states and the District of Columbia. It found that mask mandates led to a slowdown in daily COVID-19 growth rate, which became more apparent over time. The first five days after a mandate, the daily growth rate slowed by 0.9 percentage-points compared to the five days prior to the mandate; at three weeks, the daily growth rate had slowed by 2 percentage-points.
Another study looked at coronavirus deaths across 198 countries and found that those with cultural norms or government policies favoring mask-wearing had lower death rates.
Two compelling case reports also suggest that masks can prevent transmission in high-risk scenarios, said Chin-Hong and Rutherford. In one case, a man flew from China to Toronto and subsequently tested positive for COVID-19. He had a dry cough and wore a mask on the flight, and all 25 people closest to him on the flight tested negative for COVID-19. In another case, in late May, two hair stylists in Missouri had close contact with 140 clients while sick with COVID-19. Everyone wore a mask and none of the clients tested positive.
https://www.pnas.org/content/118/4/e2014564118
The science around the use of masks by the public to impede COVID-19 transmission is advancing rapidly....The preponderance of evidence indicates that mask wearing reduces transmissibility per contact by reducing transmission of infected respiratory particles in both laboratory and clinical contexts.. Public mask wearing is most effective at reducing spread of the virus when compliance is high. Given the current shortages of medical masks, we recommend the adoption of public cloth mask wearing, as an effective form of source control, in conjunction with existing hygiene, distancing, and contact tracing strategies. Because many respiratory particles become smaller due to evaporation, we recommend increasing focus on a previously overlooked aspect of mask usage: mask wearing by infectious people (€śsource control€ť) with benefits at the population level, rather than only mask wearing by susceptible people, such as health care workers, with focus on individual outcomes. We recommend that public officials and governments strongly encourage the use of widespread face masks in public, including the use of appropriate regulation.